package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public static final String Wx_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务 获得openid
       String openid=getOpenid(userLoginDTO.getCode());
       //判断openid是否为空，为空抛出异常
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断openid是否在当前用户表中 非-新用户-自动完成注册：存起来
        User user = userMapper.getByOpenid(openid);
        if(user==null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }

        //返回这个用户对象
        return user;
    }
    private String getOpenid(String code){
        //调用微信接口服务 获得openid
        Map<String,String> map=new HashMap<String,String>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json=HttpClientUtil.doGet(Wx_LOGIN,map);
        JSONObject jsonObject =JSON.parseObject(json);
        String openId = jsonObject.getString("openid");
        return openId;
    }


}
